For about the last 2 weeks, my network has been going offline a few times a day. I've switched routers (both Netgear brand), called my ISP (Spectrum) several times and gotten no where. The logs on my Netgear router are filled with messages like the following:
[DoS attack: FIN Scan] (6) attack packets in last 20 sec from ip [35.186.224.25], Thursday, Sep 08,2022 16:28:22 [DoS attack: FIN Scan] (5) attack packets in last 20 sec from ip [35.186.224.25], Thursday, Sep 08,2022 16:28:01 [DoS attack: FIN Scan] (1) attack packets in last 20 sec from ip [35.186.224.25], Thursday, Sep 08,2022 16:27:33 [DoS attack: FIN Scan] (9) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:08:54 [DoS attack: FIN Scan] (9) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:08:25 [DoS attack: FIN Scan] (11) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:08:05 [DoS attack: FIN Scan] (10) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:07:44 [DoS attack: FIN Scan] (9) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:07:23 [DoS attack: FIN Scan] (2) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:07:01 [DoS attack: FIN Scan] (1) attack packets in last 20 sec from ip [35.186.224.25], Wednesday, Sep 07,2022 23:05:01 [DoS attack: ACK Scan] (1) attack packets in last 20 sec from ip [142.250.190.74], Wednesday, Sep 07,2022 23:02:28 [DoS attack: FIN Scan] (1) attack packets in last 20 sec from ip [107.178.240.159], Wednesday, Sep 07,2022 23:01:43
Any ideas on what to try? Spectrum says everything looks fine on their end but this is frustrating.
Edit to clarify: all devices on the network lose internet connectivty when these messages populate. Phones, desktop PCs, laptops, smart speakers.
Edit for detail: Router Models tested: Netgear Nighthawk 5000, Netgear Nighthawk 7000
submitted by /u/byrd424
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